WO2009098807A1 - Machine magnétique - Google Patents

Machine magnétique Download PDF

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Publication number
WO2009098807A1
WO2009098807A1 PCT/JP2008/070096 JP2008070096W WO2009098807A1 WO 2009098807 A1 WO2009098807 A1 WO 2009098807A1 JP 2008070096 W JP2008070096 W JP 2008070096W WO 2009098807 A1 WO2009098807 A1 WO 2009098807A1
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WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic pole
row
poles
electric motor
Prior art date
Application number
PCT/JP2008/070096
Other languages
English (en)
Japanese (ja)
Inventor
Kota Kasaoka
Noriyuki Abe
Shigemitsu Akutsu
Satoyoshi Oya
Original Assignee
Honda Motor Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co., Ltd. filed Critical Honda Motor Co., Ltd.
Priority to US12/864,937 priority Critical patent/US8232701B2/en
Priority to EP08872084.2A priority patent/EP2242166A4/fr
Priority to CN200880125057.7A priority patent/CN101953056B/zh
Publication of WO2009098807A1 publication Critical patent/WO2009098807A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K51/00—Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts

Definitions

  • the present invention relates to a magnetic machine including three or more stators and movers, that is, an electric motor or a magnetic power transmission mechanism.
  • Patent Document 1 As a conventional electric motor, for example, one disclosed in Patent Document 1 is known.
  • This electric motor includes a columnar inner rotor, a cylindrical stator, a cylindrical outer rotor, and the like, and a plurality of permanent magnets are arranged in the circumferential direction on the inner rotor.
  • the stator has a plurality of armatures, and these armatures are arranged in the circumferential direction and are fixed to each other by a resin mold.
  • the outer rotor is obtained by winding a coil around a core in which a plurality of rings are stacked, and power is not supplied to the coil. Further, the inner rotor, the stator, and the outer rotor are provided in order from the inside, and are relatively rotatable.
  • the inner rotor rotates in synchronization with the rotating magnetic field by attracting and repelling the magnetic poles of the permanent magnets of the inner rotor to the outer rotor.
  • the electric motor of Patent Document 1 functions as an induction machine that rotates the outer rotor by electromagnetic induction rather than a synchronous machine, and thus has a problem of low efficiency.
  • the applicant has already proposed a motor described in Patent Document 2 as an electric motor that can solve the above problems.
  • the electric motor shown in FIGS. 1 to 6 of the same application is a rotary electric motor, and includes two outer stators arranged outside, an inner stator arranged between the two outer stators, and between the outer and inner stators.
  • a soft magnetic rotor having two rotor portions arranged is provided.
  • a plurality of armatures are arranged at predetermined intervals on each outer stator, and power is supplied to these armatures so that N poles and S poles are alternately arranged when the motor is operated.
  • each inner stator has a plurality of armatures arranged at a predetermined interval narrower than the armature of the outer stator, and the coils of each of the three adjacent armatures of each inner stator are supplied with power.
  • a U-phase, a V-phase, and a W-phase are shown and configured as a three-phase coil that generates a moving magnetic field.
  • a plurality of soft magnetic cores are arranged at the same interval as the armature of the outer stator in each of the two rotor portions of the soft magnetic rotor, and the soft magnetic core of one rotor portion is the outer stator.
  • this electric motor a magnetic circuit is formed between the magnetic poles generated in the armature of the inner stator, the soft magnetic core, and the magnetic poles of the armature of the outer stator as the moving magnetic field is generated in the inner stator.
  • the two rotor portions that is, the soft magnetic rotors are driven to rotate by magnetic lines of force acting on the soft magnetic cores of the two soft magnetic rotors.
  • the two rotor parts rotate together.
  • this electric motor functions as a synchronous machine during operation, and thereby can be more efficient than the electric motor of Patent Document 1.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a magnetic machine capable of reducing torque and thrust ripple and cogging.
  • a magnetic machine (electric motor 1, 1 A) according to claim 1 is composed of a plurality of first magnetic poles (first to third armatures 6 a to 8 a) arranged in a predetermined direction, and adjacent to each other.
  • a first magnetic pole member (first to third stators 6 to 8, case 2) having a first magnetic pole array arranged so that the polarities of the two respective first magnetic poles are different from each other, and a plurality of first magnetic pole members arranged in a predetermined direction
  • a second magnetic pole row composed of second magnetic poles (first and second permanent magnets 4b and 5b), arranged so that the two adjacent second magnetic poles have different polarities and face the first magnetic pole row.
  • a first magnetic pole member (first rotor 3) and a plurality of soft magnetic bodies (first to third soft magnetic cores 11b to 13b) arranged in a predetermined direction at intervals from each other.
  • a soft magnetic material member (second magnetic material member having a soft magnetic material row disposed between the row and the second magnetic pole row And a magnetic circuit is formed between at least two of the first magnetic pole array, the second magnetic pole array, and the soft magnetic body array during the operation of the magnetic machine, and the first magnetic pole array and the second magnetic pole array Further, m (m is an integer greater than or equal to 3) sets of magnetomechanical structures are provided, and each of the two adjacent sets of magnetomechanical structures has a first magnetic pole array of the first magnetic pole array.
  • phase difference of the electrical angle in a predetermined direction between one magnetic pole and the second magnetic pole of the second magnetic pole row is set to be different from each other, and the first magnetic pole of the first magnetic pole row and the soft magnetic material of the soft magnetic row Phase difference between the first magnetic pole array, the second magnetic pole array, and the soft magnetic body array in the predetermined direction in the m sets of magneto-mechanical structures. It is characterized by being configured to be freely movable.
  • the first magnetic pole row, the second magnetic pole row, and the soft magnetic body row are configured to be movable relative to each other in a predetermined direction.
  • a magnetic circuit is formed between at least two of the first magnetic pole row, the second magnetic pole row, and the soft magnetic body row, so that the relative relationship between the first magnetic pole row, the second magnetic pole row, and the soft magnetic body row is relatively long.
  • the electrical angle phase difference in a predetermined direction between the first magnetic pole of the first magnetic pole row and the second magnetic pole of the second magnetic pole row is set to be different from each other, and the first magnetic pole of the first magnetic pole row and Since the phase difference of the electrical angle in a predetermined direction between the soft magnetic body row and the soft magnetic body is set to be different from each other, the first magnetic pole row, the second magnetic pole row, and the soft magnetic body row as described above
  • the magnetic force changes in two different sets of adjacent magneto-mechanical structures, and the change in strength of the magnetic force in one set of magneto-mechanical structures This occurs in a set of magnetomechanical structures having a time lag.
  • this magnetic machine is a magnetic power transmission mechanism, for example, since it has three or more sets of magnetic mechanical structures, it has only two sets of magnetic mechanical structures such as the magnetic power transmission mechanism of Patent Document 3.
  • the phase difference of the electrical angle in a predetermined direction between the first magnetic pole of the first magnetic pole row and the second magnetic pole of the second magnetic pole row, and the first magnetic pole of the first magnetic pole row and the soft magnetic body The phase difference of the electrical angle in a predetermined direction between the soft magnetic bodies in the row can be set more finely. Thereby, the cogging of torque and thrust can be further reduced. In particular, the greater the number of sets of magnetic machine structures, the more the cogging of torque and thrust can be reduced. (Note that “magnetic machine” in this specification refers to electric motors such as rotary motors and linear motors, and magnetism.
  • the invention according to claim 2 is the magnetic machine according to claim 1, wherein the first magnetic pole of the first magnetic pole row and the second magnetic pole of the second magnetic pole row are arranged in m sets of magnetic machine structures.
  • the phase difference of the electrical angle in a predetermined direction between the first magnetic pole array and the soft magnetic body of the soft magnetic body array is set to a state in which the electrical angle phase difference is shifted by 2 ⁇ / m.
  • the phase difference of the electrical angle in the direction is set to be shifted by an electrical angle of ⁇ / m.
  • the electrical angle phase difference in the predetermined direction between the first magnetic pole of the first magnetic pole row and the second magnetic pole of the second magnetic pole row is 2 ⁇ /
  • the phase difference between the first magnetic pole of the first magnetic pole row and the soft magnetic body of the soft magnetic body row was shifted by an electrical angle of ⁇ / m.
  • this magnetic machine is a rotary electric motor by setting the first magnetic pole or the second magnetic pole as a magnetic pole generated by an armature
  • a calculation formula for the back electromotive force (formulas (65) to ( 67)), as will be described later, is the same as the back electromotive force calculation formula (formulas (28) to (30) to be described later) of the rotary motor disclosed in Patent Document 2, and therefore this motor is used as the rotational speed of Patent Document 2. It can be operated in the same operating state as the electric motor. That is, when the first magnetic pole row is stopped, the soft magnetic body row and the second magnetic pole row can be driven to move along a predetermined direction.
  • the soft magnetic body row and the first magnetic pole row are stopped.
  • the row can be driven to move along a predetermined direction.
  • the magnetic machine is a magnetic power transmission mechanism by setting the first magnetic pole and the second magnetic pole as magnetic poles of a permanent magnet
  • the magnetic power transmission mechanism is an armature in the above-described electric motor. Is replaced with a permanent magnet. Therefore, when this magnetic power transmission mechanism is of a torque transmission type, for example, since it has three or more sets of magnetic machine structures, two sets of magnetic machines such as the magnetic power transmission mechanism of Patent Document 3 are provided.
  • the phase difference of the electrical angle in a predetermined direction between the first magnetic pole of the first magnetic pole row and the second magnetic pole of the second magnetic pole row, and the first magnetic pole of the first magnetic pole row can be set more finely. Thereby, cogging torque and the like can be further reduced.
  • the invention according to claim 3 is the magnetic machine according to claim 1 or 2, wherein the first magnetic pole member (the first to third stators 6 to 8 and the case 2) includes m pieces of m pieces of magnetic machine structures.
  • the first magnetic pole row, the second magnetic pole member (first rotor 3) has m second magnetic pole rows in m sets of magnetic mechanical structures, and the soft magnetic member (second rotor 10) is It is characterized by having m soft magnetic substance rows in m sets of magnetic mechanical structures.
  • a magnetic machine having m sets of magnetic mechanical structures can be realized by using only one of the first magnetic pole member, the second magnetic pole member, and the soft magnetic member. Thereby, the number of parts can be reduced, and the manufacturing cost can be reduced accordingly.
  • At least one of the first magnetic pole member and the second magnetic pole member includes a plurality of armatures (first to third armatures 6a).
  • the plurality of armatures can generate at least one of the first magnetic pole and the second magnetic pole, and move in a predetermined direction by at least one of the generated first magnetic pole and second magnetic pole. It is configured to generate a magnetic field.
  • At least one of the first magnetic pole member and the second magnetic pole member has a plurality of armatures, and the plurality of armatures can generate at least one of the first magnetic pole and the second magnetic pole.
  • at least one of the generated first magnetic pole and second magnetic pole is configured to generate a moving magnetic field that moves in a predetermined direction, so that the magnetic machine is configured as an electric motor. Therefore, when this electric motor is a rotary electric motor, for example, as described above, it can be operated in the same operation state as the rotary electric motor of Patent Document 2.
  • the first magnetic pole and the second magnetic pole of the first magnetic pole row are compared with those having only two sets of magnetic mechanical structures, such as the electric motor of Patent Document 2.
  • the phase difference of the electrical angle in a predetermined direction between the magnetic pole row and the second magnetic pole, and the phase difference of the electrical angle in a predetermined direction between the first magnetic pole of the first magnetic pole row and the soft magnetic body of the soft magnetic row Can be set more finely.
  • torque ripple and cogging torque can be further reduced.
  • torque ripple and cogging torque can be further reduced as the number of sets of magnetic mechanical structures increases.
  • thrust ripple and cogging thrust can be further reduced.
  • the invention according to claim 5 is the magnetic machine according to any one of claims 1 to 3, wherein the first magnetic pole member has a plurality of first permanent magnets arranged in a predetermined direction, and the plurality of first magnetic poles is The second magnetic pole member has a plurality of second permanent magnets arranged in a predetermined direction, and the plurality of second magnetic poles are magnetic poles of the plurality of second permanent magnets. It is configured.
  • the plurality of first magnetic poles are composed of the magnetic poles of the plurality of first permanent magnets
  • the plurality of second magnetic poles are composed of the magnetic poles of the plurality of second permanent magnets.
  • the machine is a magnetic power transmission mechanism.
  • the magnetic power transmission mechanism corresponds to the motor of claim 4 in which the armature is replaced with a permanent magnet, by replacing the moving magnetic field with the movement of the first magnetic pole row or the second magnetic pole row, Operations as described above can be performed.
  • this magnetic power transmission mechanism is of a torque transmission type, for example, since it has three or more sets of magnetic machine structures, two sets of magnetic machines such as the magnetic power transmission mechanism of Patent Document 3 are provided.
  • the phase difference of the electrical angle in a predetermined direction between the first magnetic pole of the first magnetic pole row and the second magnetic pole of the second magnetic pole row, and the first magnetic pole of the first magnetic pole row can be set more finely. Thereby, cogging torque and the like can be further reduced.
  • the invention according to claim 6 is the magnetic machine according to claim 1, wherein the predetermined direction is a circumferential direction centered on a predetermined axis.
  • this magnetic machine it is possible to realize a rotary electric motor capable of reducing torque ripple and cogging torque, or a torque transmission type magnetic power transmission mechanism capable of reducing cogging torque and the like.
  • the invention according to claim 7 is the magnetic machine according to claim 1, wherein the predetermined direction is a linear direction.
  • a linear motor capable of reducing thrust ripple and cogging thrust, or a thrust transmission type magnetic power transmission mechanism capable of reducing cogging thrust can be realized.
  • a magnetic machine (electric motors 1B to 1D) includes a first magnetic pole (armature 61) having a plurality of first magnetic poles (armatures 61) arranged along a predetermined virtual plane so that two adjacent polarities are different from each other.
  • a plurality of second magnetic poles (permanently) arranged so that there are gaps between the magnetic pole member (stator 60) and two adjacent polarities along a predetermined virtual plane and different from each other.
  • a second magnetic pole member (first rotor 40) having a magnet 42), a plurality of first magnetic poles (armature 61) and a plurality of second magnetic poles (permanent magnets) so as to be along a predetermined virtual plane with a space therebetween.
  • a soft magnetic member having a plurality of soft magnetic bodies (soft magnetic cores 51) disposed between the first magnetic pole, the plurality of second magnetic poles, The plurality of soft magnetic bodies are moved along a predetermined virtual plane.
  • the plurality of first magnetic poles (armature 61) are arranged so as to be relatively movable with respect to each other such that the electrical angle between both ends of each first magnetic pole (armature 61) is ⁇ s.
  • Each of the plurality of second magnetic poles extends in a first predetermined direction along a predetermined virtual plane so that the electrical angle between both ends of each second magnetic pole (permanent magnet 42) is ⁇ a.
  • each of the plurality of soft magnetic bodies (soft magnetic core 51) is electrically connected between both ends of each soft magnetic body (soft magnetic core 51).
  • each of the plurality of first magnetic poles extends in the first predetermined direction along a predetermined virtual plane such that the electrical angle between both ends of each first magnetic pole is ⁇ s.
  • the magnetic machine is a magnetic power transmission mechanism by setting the first magnetic pole and the second magnetic pole as magnetic poles of a permanent magnet
  • the magnetic power transmission mechanism is an armature in the above-described electric motor. Is replaced with a permanent magnet. Thereby, the cogging of torque and thrust can be further reduced.
  • the invention according to claim 9 is the magnetic machine according to claim 8, wherein one of the two electrical angles ⁇ s, ⁇ a is larger than the electrical angle ⁇ b by an electrical angle ⁇ .
  • the other of the two electrical angles ⁇ s and ⁇ a is set to be smaller than the electrical angle ⁇ b by an electrical angle ⁇ .
  • this magnetic machine for example, when the first magnetic pole and / or the second magnetic pole is set as a magnetic pole generated by the armature, and the magnetic machine is configured as a rotary electric motor, as described later, Since the machine is equivalent to a rotary motor and m ⁇ ⁇ , the same operation state as that of the rotary motor can be obtained, and torque ripple and cogging torque can be further reduced. Further, when this magnetic machine is configured as a linear motor, thrust ripple and cogging thrust can be further reduced. On the other hand, when this magnetic machine is configured as a magnetic power transmission mechanism, torque and thrust cogging can be further reduced.
  • the same operating state as that of the magnetic machine according to the fourth aspect that is, the electric motor
  • the torque and thrust ripple and cogging can be further reduced as compared with the electric motor according to the fourth aspect.
  • torque and thrust ripples and cogging can be reduced as compared to conventional motors.
  • the invention according to claim 11 is the magnetic machine according to claim 8 or 9, wherein the first magnetic pole member has a plurality of first permanent magnets arranged in a predetermined movement direction, and the plurality of first magnetic poles are:
  • the second magnetic pole member has a plurality of second permanent magnets arranged in a predetermined moving direction, and the plurality of second magnetic poles are magnetic poles of the plurality of second permanent magnets. It is characterized by comprising.
  • the plurality of first magnetic poles are composed of the magnetic poles of the plurality of first permanent magnets
  • the plurality of second magnetic poles are composed of the magnetic poles of the plurality of second permanent magnets.
  • the machine is a magnetic power transmission mechanism.
  • the magnetic power transmission mechanism corresponds to the magnetic machine, that is, the electric motor according to claim 10, in which the armature is replaced with a permanent magnet, so that the moving magnetic field is replaced with the movement of the first magnetic pole member or the second magnetic pole member.
  • this magnetic machine is a torque transmission type magnetic power transmission mechanism, for example, it is possible to realize a magnetic power transmission mechanism that can reduce cogging torque and the like as compared with the magnetic power transmission mechanism of Patent Document 3. it can.
  • the invention according to claim 12 is the magnetic machine according to claim 8, wherein the predetermined movement direction is a circumferential direction centered on a predetermined axis.
  • this magnetic machine it is possible to realize a rotary electric motor capable of reducing torque ripple and cogging torque, or a torque transmission type magnetic power transmission mechanism capable of reducing cogging torque and the like.
  • the invention according to claim 13 is the magnetic machine according to claim 8, wherein the predetermined moving direction is a virtual plane.
  • a linear motor capable of reducing thrust ripple and cogging thrust, or a thrust transmission type magnetic power transmission mechanism capable of reducing cogging thrust can be realized.
  • FIG. 2 is a development view showing a part of a cross section broken along the circumferential direction at the position of the AA line in FIG. 1.
  • FIG. 4 is a schematic developed view of a part of a cross-section broken along the circumferential direction at the position of line BB in FIG. 3. It is a figure which shows the structure equivalent to the structure of the expanded view of FIG.
  • FIG. 4 is a diagram for explaining an operation when the first shaft is fixed in the electric motor of FIG. 3.
  • FIG. 7 is a diagram for explaining an operation subsequent to FIG. 6.
  • FIG. 4 is a diagram for explaining an operation when the second shaft is fixed in the electric motor of FIG. 3.
  • FIG. 10 is a diagram for explaining an operation subsequent to FIG. 9.
  • FIG. 6 is a view showing a modification of the arrangement of the first to third electric motor structures of the electric motor.
  • FIG. 20 is a diagram illustrating an example when one virtual motor structure is added to the motor of FIG. 19. It is a figure which shows typically the modification of arrangement
  • FIG. 1 schematically shows a cross-sectional configuration of the electric motor 1 of the first embodiment
  • FIG. 2 shows a part of a cross-section broken along the circumferential direction at the position of line AA in FIG. The state developed in a plane is shown.
  • FIGS. 1 and 2 the hatching of the cross section is omitted for easy understanding, and this is the same in various drawings described later.
  • the left and right sides in both figures are referred to as “left” and “right”, respectively.
  • a side wall 2b and a rotating shaft 10a which will be described later, are omitted for convenience.
  • the electric motor 1 includes a case 2, first and second rotors 3, 10, first to third stators 6 to 8, and the like.
  • the case 2 includes a cylindrical main body 2a and left and right side walls 2b, 2b formed integrally at both ends in the axial direction thereof.
  • a hollow cylinder is formed at the center of both side walls 2b, 2b.
  • the parts 2c and 2c are provided integrally.
  • the case 2 and the first to third stators 6 to 8 correspond to the first magnetic pole member
  • the first rotor 3 corresponds to the second magnetic pole member
  • the second rotor 10 corresponds to the soft magnetic member. .
  • the first rotor 3 has a rotating shaft 3a and first and second magnet rotor portions 4 and 5 that rotate integrally with the rotating shaft 3a.
  • the rotary shaft 3a is supported so as to be rotatable about its axis via a bearing (not shown).
  • the first magnet rotor section 4 includes a flange 4a concentrically provided at a predetermined position on the rotating shaft 3a, and 2n (n is a natural number) first permanent magnets 4b fixed to the outer end of the flange 4a.
  • the first permanent magnet row is included.
  • the first permanent magnets 4b are provided at a pitch of an electrical angle ⁇ along the circumferential direction of the main body 2a, and the magnetic poles of the two adjacent first permanent magnets 4b and 4b have different polarities. Is set to have.
  • the second magnet rotor portion 5 has a second permanent magnet row composed of a flange 5a provided integrally and concentrically with the rotating shaft 3a, and 2n second permanent magnets 5b fixed to the outer end portion thereof. is doing.
  • These second permanent magnets 5b are provided at a pitch of an electrical angle ⁇ along the circumferential direction of the main body 2a, and are arranged so that the center position thereof coincides with the first permanent magnet 4b in the left-right direction.
  • the magnetic poles on both sides of each second permanent magnet 5b have the same polarity as the first permanent magnets 4b arranged at the same position in the left-right direction, and the magnetic poles of the two adjacent second permanent magnets 5b and 5b have different polarities. Is set to have.
  • the magnetic poles of the first and second permanent magnets 4b and 5b correspond to the second magnetic pole.
  • the first stator 6 generates a rotating magnetic field in accordance with the supply of electric power, and has a first armature row composed of 3n first armatures 6a. These first armatures 6a are attached to predetermined portions of the inner wall of the main body 2a, and are provided at a pitch of 2 ⁇ / 3 along the circumferential direction of the main body 2a.
  • Each first armature 6a includes an iron core 6b, a coil 6c wound around the iron core 6b in a concentrated manner, and the 3n coils 6c include n sets of U phase, V phase, and W A three-phase coil composed of phases is configured.
  • the first armature 6a having the U-phase coil 6c is arranged so that the electrical position thereof coincides with the first permanent magnet 4b having N poles in the left-right direction.
  • the first armature 6a is connected to the variable power source 14.
  • the variable power source 14 is a combination of an electric circuit including an inverter and a battery, and is connected to the ECU 15.
  • the first armature 6a is configured such that when electric power is supplied from the variable power source 14, magnetic poles are generated at the end of the iron core 6b on the first permanent magnet 4b side.
  • the first rotating magnetic field is generated so as to rotate along the first stator 6 with the first magnet rotor portion 4.
  • first armature magnetic pole the magnetic pole generated at the end of the iron core 6b on the first permanent magnet 4b side
  • the number of these first armature magnetic poles is set to be the same as the number of magnetic poles of the first permanent magnet 4a (that is, 2n).
  • the second stator 7 similarly to the first stator 6, the second stator 7 also generates a rotating magnetic field with the supply of electric power, and the same number (namely, 3n) of second armatures as the first armature 6a.
  • a second armature train of 7a These second armatures 7a are attached to a predetermined portion of the inner wall of the main body 2a and are provided at a pitch of 2 ⁇ / 3 along the circumferential direction of the main body 2a.
  • Each second armature 7a includes an iron core 7b and a coil 7c wound around the iron core 7b in a concentrated manner.
  • the 3n coils 7c include n sets of U phase, V phase, and W
  • a three-phase coil 7c composed of phases is configured.
  • the second armature 7a having the W-phase coil 7c is arranged so that the electrical position thereof coincides with the first armature 6a having the U-phase coil 6c described above in the left-right direction (see FIG. 2).
  • the second armature 7a is connected to the variable power source 14, and when power is supplied from the variable power source 14, the same number of magnetic poles as the magnetic poles of the second permanent magnet 5b (that is, 2n pieces) are iron. It is comprised so that it may generate
  • the magnetic pole generated at the end of the iron core 7b on the second permanent magnet 5b side is referred to as “second armature magnetic pole”.
  • a second rotating magnetic field is generated so as to rotate along the second stator 7 between the second armature 7 a and the second magnet rotor portion 5.
  • each of the first and second stators 6 and 7 is provided with a back yoke (not shown) in order to prevent magnetic flux from leaking between the two stators 6 and 7. Accordingly, the magnetic short circuit is not generated between the two stators 6 and 7.
  • the third stator 8 generates a rotating magnetic field with the supply of electric power, and the first and second armatures 6a and 7a
  • the third armature row includes the same number (that is, 3n) of third armatures 8a.
  • These third armatures 8a are attached to the right side wall 2b of the main body 2a, and are provided at a pitch of an electrical angle of 2 ⁇ / 3 along the circumferential direction of the main body 2a.
  • Each third armature 8a includes an iron core 8b and a coil 8c wound around the iron core 8b in a concentrated manner.
  • the 3n coils 8c include n sets of U phase, V phase, and W A three-phase coil 8c composed of phases is configured.
  • the third armature 8a having the V-phase coil 8c has a first armature 6a having the U-phase coil 6c described above in the left-right direction and a second armature 7a having the W-phase coil 7c. Etc. (see FIG. 2).
  • the third armature 8a is connected to the variable power source 14, and when electric power is supplied from the variable power source 14, the same number of magnetic poles as the magnetic poles of the second permanent magnet 5b (that is, 2n) are iron. It is comprised so that it may generate
  • the magnetic pole generated at the end of the iron core 8b on the second permanent magnet 5b side is referred to as “third armature magnetic pole”.
  • a third rotating magnetic field is generated so as to rotate along the third stator 8 between the third armature 8 a and the second magnet rotor portion 5.
  • the first to third armature magnetic poles correspond to the second magnetic pole.
  • the second rotor 10 includes a hollow and cylindrical rotating shaft 10a, and first to third soft magnetic rotor portions 11 to 13 integrated therewith.
  • the rotary shaft 10a is fitted to the rotary shaft 3a described above through its inner hole, and is fitted into the inner holes of the cylindrical portions 2c and 2c of the case 2 at the outer peripheral portion.
  • the rotating shaft 10a is supported by a bearing (not shown), and is thereby configured to be rotatable about the axis with respect to the rotating shaft 3a and the case 2.
  • the first soft magnetic rotor portion 11 includes a non-magnetic flange 11a provided integrally and concentrically with the rotating shaft 10a, and 2n first soft magnetic cores (hereinafter referred to as the outer end portions). And a first soft magnetic core array of 11b (referred to as “first core”). These first cores 11b are formed by laminating a plurality of steel plates, and are provided at a pitch of an electrical angle ⁇ along the circumferential direction of the main body 2a.
  • the first core 11b is disposed in the middle of the first electromagnet 4b and the first armature 6a, and at the middle position between the first permanent magnet 4b and the first armature 6a when the second rotor 10 rotates. It rotates along the circumferential direction of the main body 2a.
  • the second soft magnetic rotor portion 12 includes a non-magnetic flange 12a provided integrally and concentrically with the rotating shaft 10a, and 2n second soft magnetic cores (fixed to the outer side of the flange 12a).
  • second core 2n second soft magnetic cores (fixed to the outer side of the flange 12a).
  • second core 12b 2n second soft magnetic cores (fixed to the outer side of the flange 12a).
  • these second cores 12b are formed by laminating a plurality of steel plates, and are provided at a pitch of an electrical angle ⁇ along the circumferential direction of the main body 2a.
  • the first core 11b is disposed on the lower side of FIG. 2 with an electrical angle ⁇ / 3 shifted.
  • the second core 12b is disposed between the second armature 7a and the second permanent magnet 5b. When the second rotor 10 is rotated, the second core 12b is positioned between the second armature 7a and the second permanent magnet 5b. Rotate along the circum
  • the third soft magnetic rotor portion 13 includes a non-magnetic flange 13a provided integrally and concentrically with the rotating shaft 10a, and 2n third soft magnetic cores (fixed to the outer side of the flange 13a). (Hereinafter referred to as “third core”) 13b.
  • the flange 13a is formed integrally with the flange 12a via the cylindrical portion 10b.
  • the 2n third cores 13b are formed by stacking a plurality of steel plates, and have an electrical angle ⁇ along the circumferential direction of the main body 2a.
  • the second core 12b is disposed at a position shifted from the lower side of FIG. 2 by an electrical angle ⁇ / 3.
  • the three cores 11b to 13b are arranged in a state where the phase difference between the two adjacent cores is shifted by the electrical angle ⁇ / 3 toward the lower side of FIG.
  • the third core 13b is disposed between the second permanent magnet 5b and the third armature 8a.
  • the third core 13b is positioned between the second permanent magnet 5b and the third armature 8a. Rotate along the circumferential direction of the main body 2a.
  • the two permanent magnets 4b and 5b, the three cores 11b to 13b, and the three iron cores 6b to 8b all have the same radial distance from the axis of the rotating shaft 3a and the axis.
  • the sectional areas in the directions are the same.
  • the three cores 11b to 13b correspond to soft magnetic materials.
  • the ECU 15 is composed of a microcomputer including a CPU, a RAM, a ROM, an I / O interface (all not shown), and the like, and is supplied from the variable power supply 14 to the first to third armatures 6a to 8a.
  • the driving operation of the electric motor 1 is controlled by controlling each of the electric power.
  • the electric motor 20 includes a case 26, two bearings 27, 27 fixed to the case 26, a first shaft 21 and a first shaft 21 rotatably supported by these bearings 27, 27, respectively.
  • a predetermined interval exists between the two shafts 22, the first rotor 23 provided in the case 26, the stator 24 provided in the case 26 so as to face the first rotor 23, and the two 23, 24.
  • the second rotor 25 provided in the state is provided.
  • the first rotor 23, the second rotor 25, and the stator 24 are arranged in this order from the inside in the radial direction of the first shaft 21.
  • the two shafts 21 and 22 are disposed concentrically with each other.
  • the first rotor 23 has 2n first permanent magnets 23a and second permanent magnets 23b, and the first and second permanent magnets 23a and 23b are respectively in the circumferential direction of the first shaft 21 (hereinafter simply referred to as the “first permanent magnet 23a”). They are lined up at equal intervals in the “circumferential direction”.
  • the first and second permanent magnets 23a and 23b are attached to the outer peripheral surface of the ring-shaped fixing portion 23c in the axial direction and in contact with each other. With the above configuration, the first and second permanent magnets 23 a and 23 b are rotatable together with the first shaft 21.
  • the pitch between each of the two first and second permanent magnets 23a and 23b adjacent to each other in the circumferential direction around the first shaft 21 is set to an electrical angle ⁇ .
  • the polarities of the first and second permanent magnets 23a, 23b are the same in the axial direction and different from each other in the two adjacent in the circumferential direction.
  • the magnetic poles of the first and second permanent magnets 23a and 23b are referred to as “first magnetic pole” and “second magnetic pole”, respectively.
  • the stator 24 generates the first and second rotating magnetic fields between the first and second permanent magnets 23a and 23b, respectively, and has 3n armatures 24a arranged at equal intervals in the circumferential direction. ing.
  • Each armature 24a includes an iron core 24b and a coil 24c wound around the iron core 24b by concentrated winding.
  • a groove 24d extending in the circumferential direction is formed in the central portion of the inner peripheral surface of the iron core 24b in the axial direction.
  • the 3n coils 24c constitute n sets of U-phase, V-phase, and W-phase three-phase coils (see FIG. 4).
  • the armature 24a is attached to the inner peripheral surface of the peripheral wall 26a of the case 26 via a ring-shaped fixing portion 24e.
  • the armature 24a is connected to the variable power source 14, and when electric power is supplied, magnetic poles having different polarities are formed at the ends of the iron core 24b on the first and second permanent magnets 23a, 23b side. Each is configured to occur. As these magnetic poles are generated, the first and second rotating magnetic fields are generated between the first rotor 23 and the second permanent magnet 23b. Each occurs to rotate in the direction.
  • the magnetic poles generated at the ends of the iron core 24b on the first and second permanent magnets 23a, 23b side are referred to as “first armature magnetic pole” and “second armature magnetic pole”, respectively.
  • the first and second armature magnetic poles are set to the same number (that is, 2n) as the magnetic poles of the first permanent magnet 23a.
  • the second rotor 25 has the same number (namely, 2n) of first soft magnetic cores (hereinafter referred to as “first cores”) 25a and second soft magnetic cores (hereinafter referred to as “second cores”) as the first permanent magnets 23a. 25b).
  • the cores 25a and 25b are arranged at a pitch of an electrical angle ⁇ in the circumferential direction, and the phase difference between the two 25a and 25b is shifted by an electrical angle ⁇ / 2.
  • Each of the first and second cores 25a and 25b is made of a soft magnetic material (specifically, a laminate of a plurality of steel plates).
  • the first and second cores 25a and 25b are respectively attached to the outer ends of the disc-shaped flange 25e via rod-shaped connecting portions 25c and 25d that slightly extend in the axial direction.
  • the flange 25e is integrally and concentrically provided on the second shaft 22. With this configuration, the first and second cores 25 a and 25 b are rotatable integrally with the second shaft 22.
  • the electric motor 20 having the above configuration is configured such that one of the first and second shafts 21 and 22 is fixed, or the other is rotated while power is input to one of them.
  • the operation of the electric motor 20 when the second shaft 22 is rotated while the first shaft 21 is fixed will be described with reference to FIGS. 6 and 7.
  • the movement of the first and second rotating magnetic fields is equivalent to 2n virtual permanent magnets (hereinafter referred to as “virtual magnets”) equivalent to the first and second permanent magnets 23a, 23b and the like. It will be described by replacing it with 24x physical movement.
  • the first and second permanent magnets 23a and 23b side magnetic poles of the virtual magnet 24x are used as first and second armature magnetic poles, respectively, between the first permanent magnet 23a and the second permanent magnet 23b.
  • the rotating magnetic fields generated respectively will be described as first and second rotating magnetic fields.
  • each first core 25a is opposed to each first permanent magnet 23a, and each second core 25b is located between each two adjacent second permanent magnets 23b. From the state, the first and second rotating magnetic fields are generated to rotate downward in the figure. At the start of the occurrence, the polarity of each first armature magnetic pole is made different from the polarity of each first magnetic pole opposed thereto, and the polarity of each second armature magnetic pole is changed to the polarity of each second magnetic pole opposed thereto. Set the same as.
  • first magnetic field line (hereinafter referred to as “first magnetic field line”) G1 is generated between the magnetic poles.
  • second magnetic field line is generated between the second magnetic pole and the second magnetic pole.
  • the first magnetic field lines G1 are generated so as to connect the first magnetic pole, the first core 25a, and the first armature magnetic poles, and the second magnetic field lines G2 are adjacent to each other in the circumferential direction. So as to connect two second armature magnetic poles and the second core 25b positioned between the two armature magnetic poles, and to connect the second core 25b positioned between the two second magnetic poles adjacent to each other in the circumferential direction. appear.
  • the bending degree and the total magnetic flux amount of the two second magnetic field lines G2 between the two second armature magnetic poles adjacent to each other in the circumferential direction and the second core 25b are equal to each other.
  • the degree of bending and the total amount of magnetic flux of the two second magnetic lines G2 between the two second magnetic poles and the second core 25b are also equal and balanced. For this reason, the magnetic force which rotates in the circumferential direction does not act also on the 2nd core 25b.
  • a second magnetic field line G2 connecting the second armature magnetic pole, the second core 25b, and the second magnetic pole is generated.
  • the first magnetic field lines G1 between the first core 25a and the first armature magnetic pole are bent. Accordingly, a magnetic circuit as shown in FIG. 8B is configured by the first and second magnetic lines of force.
  • the degree of bending of the first magnetic lines of force G1 is small, the total amount of magnetic flux is large, so that a relatively strong magnetic force acts on the first core 25a.
  • the first core 25a is driven with a relatively large driving force in the rotation direction of the virtual magnet 24x, that is, the rotation direction of the first and second rotating magnetic fields (hereinafter referred to as “magnetic field rotating direction”).
  • the second shaft 22 rotates in the magnetic field rotation direction.
  • the degree of bending of the second magnetic lines of force G2 is large, the total magnetic flux amount is small, so that a relatively weak magnetic force acts on the second core 25b, whereby the second core 25b is relatively small in the magnetic field rotation direction.
  • the second shaft 22 rotates in the magnetic field rotation direction.
  • the first core 25a and the first core 25a are rotated.
  • Each of the two cores 25b is driven in the magnetic field rotation direction by the magnetic force caused by the first and second magnetic field lines G1 and G2, and as a result, the second shaft 22 rotates in the magnetic field rotation direction.
  • the magnetic force acting on the first core 25a is gradually weakened by decreasing the total magnetic flux amount, although the bending degree of the first magnetic line G1 is increased, and drives the first core 25a in the magnetic field rotation direction.
  • the driving force gradually decreases.
  • the magnetic force acting on the second core 25b is gradually increased as the total magnetic flux amount is increased, although the degree of bending of the second magnetic field line G2 is reduced, and the second core 25b is driven in the magnetic field rotation direction.
  • the driving force gradually increases.
  • the first armature magnetic pole and the first magnetic pole have the same polarity, and the first core 25a is positioned between two sets of the first armature magnetic pole and the first magnetic pole having the same polarity adjacent in the circumferential direction. Become. In this state, although the degree of bending of the first magnetic field lines is large, a magnetic force that rotates in the direction of rotating the magnetic field does not act on the first core 25a due to the small amount of the total magnetic flux. Further, the second armature magnetic pole and the second magnetic pole facing each other have different polarities.
  • the first core 25a and the second core 25b are driven in the magnetic field rotation direction by the magnetic force caused by the first and second magnetic lines of force G1 and G2, and the second shaft 22 is moved to the magnetic field. Rotate in the direction of rotation.
  • the magnetic force acting on the first core 25a is contrary to the above, although the degree of bending of the first magnetic field line G1 is small.
  • the driving force acting on the first core 25a increases as the amount of magnetic flux increases.
  • the magnetic force acting on the second core 25b is weakened by decreasing the total magnetic flux amount, although the bending degree of the second magnetic field line G2 is increased, and the driving force acting on the second core 25b is reduced.
  • the driving forces acting on the first core 25a and the second core 25b are alternately increased or decreased.
  • the second shaft 22 rotates in the direction of rotating the magnetic field while repeating this state. That is, when rotating the second shaft 22 with the first shaft 21 fixed, the electric motor 20 operates as described above.
  • the first core 25a and the second core 25b have the electrical angle ⁇ .
  • the second shaft 22 rotates at a speed that is 1/2 of the rotational speed of the first and second rotating magnetic fields because it rotates only for / 2 minutes.
  • the first core 25a and the second core 25b are intermediate between the first magnetic pole and the first armature magnetic pole in which the first core 25a and the second core 25b are connected by the first magnetic field line G1 by the action of the magnetic force caused by the first and second magnetic field lines G1, G2.
  • the second magnetic pole connected by the second magnetic field line G2 and the second armature magnetic pole in order to rotate while maintaining the respective positions.
  • the rotation speed (hereinafter referred to as “second axis rotation speed”) V2 of the second shaft 22 is half the rotation speed V0 of the first and second rotating magnetic fields (hereinafter referred to as “magnetic field rotation speed”).
  • V2 V0 / 2 is established. That is, in this case, the relationship among the rotation speed of the first shaft 21 (hereinafter referred to as “first shaft rotation speed”) V1, the second shaft rotation speed V2, and the magnetic field rotation speed V0 is expressed as shown in FIG. Is done.
  • first magnetic field line (hereinafter referred to as “first magnetic field line”) is generated.
  • second magnetic field lines (hereinafter referred to as “second magnetic field lines”) G2 ′ are generated.
  • each first core 25a is opposed to the first permanent magnet 23a, and each second core 25a is positioned between two adjacent second permanent magnets 23b.
  • the first and second rotating magnetic fields are generated to rotate downward in the figure.
  • the polarity of each first armature magnetic pole is made different from the polarity of each first magnetic pole opposed thereto, and the polarity of each second armature magnetic pole is changed to the polarity of each second magnetic pole opposed thereto.
  • the total magnetic flux amount of the first magnetic line of force G1 ′ between the first magnetic pole and the first core 25a is high, the first magnetic line of force G1 ′ is straight, and thus the first permanent line with respect to the first core 25a is the first permanent. Magnetic force that rotates the magnet 23a is not generated. Further, since the distance between the second magnetic pole and the second armature magnetic pole having a different polarity is relatively long, the total magnetic flux amount of the second magnetic field line G2 ′ between the second core 25b and the second magnetic pole is relatively small. Although the amount of bending is large, a magnetic force that causes the second permanent magnet 23b to approach the second core 25b acts on the second permanent magnet 23b.
  • the second permanent magnet 23b is driven together with the first permanent magnet 23a in the direction of rotation of the virtual magnet 24x, that is, in the direction opposite to the magnetic field rotation direction (upward in FIG. 9), toward the position shown in FIG. 9C. Rotate. Accordingly, the first shaft 21 rotates in the direction opposite to the magnetic field rotation direction.
  • the virtual magnet 24x is a position shown in FIG.9 (d). Rotate towards As described above, when the second permanent magnet 23b approaches the second core 25b, the degree of bending of the second magnetic field line G2 ′ between the second core 25b and the second magnetic pole is reduced, but the virtual magnet 24x is the second magnet 24x. As the core 25b is further approached, the total magnetic flux amount of the second magnetic lines of force G2 ′ increases.
  • the first permanent magnet 23a rotates in the direction opposite to the magnetic field rotation direction, the first magnetic field line G1 ′ between the first magnetic pole and the first core 25a is bent, so that the first permanent magnet 23a A magnetic force acts so as to bring the first core 25a closer to the first core 25a.
  • the magnetic force due to the first magnetic field line G1 ′ is smaller than the magnetic force due to the second magnetic field line G2 ′ described above because the degree of bending of the first magnetic field line G1 ′ is smaller than that of the second magnetic field line G2 ′. weak.
  • the second permanent magnet 23b is driven in the direction opposite to the magnetic field rotation direction together with the first permanent magnet 23a by the magnetic force corresponding to the difference between the two magnetic forces.
  • the magnetic force due to the first magnetic field line G1 ′ between the first magnetic pole and the first core 25a is changed to the first.
  • the first permanent magnet 23a acts so as to approach the first core 25a, whereby the first permanent magnet 23a is driven together with the second permanent magnet 23b in the direction opposite to the magnetic field rotation direction, and the first shaft 21 is moved. It rotates in the direction opposite to the magnetic field rotation direction.
  • the virtual magnet 24x further rotates, the magnetic force caused by the first magnetic field line G1 ′ between the first magnetic pole and the first core 25a and the second magnetic field line G2 ′ between the second core 25b and the second magnetic pole are caused.
  • the first permanent magnet 23a and the second permanent magnet 23b are driven in a direction opposite to the magnetic field rotation direction by the magnetic force corresponding to the magnetic force difference. After that, when the magnetic force due to the second magnetic field line G2 ′ hardly acts so as to bring the second permanent magnet 23b closer to the second core 25b, the first permanent magnet 23a is caused by the magnetic force due to the first magnetic field line G1 ′. It is driven together with the second permanent magnet 23b.
  • the magnetic force caused by the first magnetic field line G1 ′ between the first magnetic pole and the first core 25a, and between the second core 25b and the second magnetic pole act alternately on the first and second permanent magnets 23a and 23b, that is, on the first shaft 21, thereby
  • the one shaft 21 rotates in the direction opposite to the magnetic field rotation direction. Further, when the magnetic force, that is, the driving force acts alternately on the first shaft 21, the torque of the first shaft 21 becomes substantially constant.
  • the first and second cores 25a and 25b are moved between the first magnetic pole and the first armature magnetic pole by the action of the magnetic force caused by the first and second magnetic field lines G1 ′, G2 ′, and the second magnetic pole.
  • the first and second permanent magnets 23a and 23b rotate while maintaining the state of being positioned in the middle of the second armature magnetic pole.
  • the first and second cores 7a and 8a have the middle between the first magnetic pole and the first armature magnetic pole, and the second by the action of the magnetic force caused by the first and second magnetic field lines G1 and G2. It rotates while maintaining the state positioned between the magnetic pole and the second armature magnetic pole. This applies to the first and second cores 25a and 25b as well.
  • the rotation angle of the second shaft 22 integral with both the 25a and 25b is the rotation angle of the first and second rotating magnetic fields, and the first and second rotation angles.
  • the average value of the rotation angle of the magnetic pole, that is, the rotation angle of the first shaft 21 is obtained.
  • FIG. 11C shows an example in which the first and second shafts 21 and 22 are both rotated in the magnetic field rotation direction
  • FIG. 11D shows an example in which the first shaft 21 is rotated in the reverse direction.
  • the configuration of the stator 24 is the same as that of a general one-rotor type brushless DC motor.
  • the first rotor 23 composed of permanent magnets but also soft magnets.
  • the difference is that it has a second rotor 25 composed of a body or the like.
  • the voltages for the U-phase to W-phase currents Iu, Iv, and Iw are substantially the same as in the case of a general brushless DC motor, but as the first and second rotors 23 and 25 rotate.
  • the counter electromotive voltage (induced voltage) generated in the U-phase to W-phase coils 24c is different from that in a general brushless DC motor.
  • FIG. 12 shows an example of an equivalent circuit corresponding to the motor structure when the 2n first permanent magnets 23a, the 2n first cores 25a, and the 3n armatures 24a have a single motor structure. ing.
  • the number of poles 2 for convenience, the number of poles of the electric motor 20 is 2n as mentioned above.
  • the magnetic fluxes ⁇ ua1, ⁇ va1, and ⁇ wa1 of the first permanent magnet 23a that directly pass through the U-phase to W-phase coils 24c without passing through the first core 25a are expressed by the following equations (1) to (3). Each is represented.
  • ⁇ fb is the maximum value of the magnetic flux of the first permanent magnet 23a that directly passes through the coil 24c of each phase.
  • ⁇ e1 is a first rotor electrical angle, and represents the rotation angle of the first rotor 23 with respect to one armature 24a (hereinafter referred to as “reference armature”) of the reference stator 24 as an electrical angle. .
  • the magnetic fluxes ⁇ ua2, ⁇ va2, and ⁇ wa2 of the first permanent magnet 23a passing through the U-phase to W-phase coils 24c via the first core 25a are expressed by the following equations (4) to (6), respectively.
  • ⁇ fa is the maximum value of the magnetic flux of the first permanent magnet 23a passing through the coil 24c of each phase through the first core 25a.
  • ⁇ e2 is a second rotor electrical angle, and represents the rotation angle of the second rotor 25 with respect to the reference armature as an electrical angle.
  • the magnetic fluxes ⁇ ua, ⁇ va, ⁇ wa of the first permanent magnet 23a that respectively pass through the U-phase to W-phase coils 24c are the magnetic fluxes ⁇ ua1, ⁇ va1, ⁇ wa1 that directly pass through the U-phase to W-phase coils 24c, and
  • first U phase counter electromotive voltage Vcu1 first U phase counter electromotive voltage Vcu1
  • first V phase counter electromotive voltage Vcv1 first W phase counter electromotive voltage Vcw1
  • the back electromotive voltages Vcu1, Vcv1, and Vcw1 of the first U phase to the W phase are respectively expressed by the following equations (13) to (15) obtained by time differentiation of the equations (10) to (12).
  • ⁇ e2 is a time differential value of ⁇ e2, that is, a value obtained by converting the angular velocity of the second rotor 25 into an electrical angular velocity (hereinafter referred to as “second rotor electrical angular velocity”)
  • ⁇ e1 is a time differential value of ⁇ e1. That is, a value obtained by converting the angular velocity of the first rotor 23 into an electrical angular velocity (hereinafter referred to as “first rotor electrical angular velocity”).
  • FIG. 13 shows an example of an equivalent circuit corresponding to the motor structure when the 2n second permanent magnets 23b, the 2n second cores 25b, and the 3n armatures 24a have a single motor structure. Is shown.
  • the back electromotive voltage generated in the U-phase to W-phase coil 24c in accordance with the rotation of the second permanent magnet 23b and / or the second core 25b is the case of the first permanent magnet 23a and the first core 25a described above. Similarly to the above, it is obtained as follows.
  • second U-phase counter electromotive voltage Vcu2 the counter electromotive voltages generated in the U-phase to W-phase coils 24c are referred to as “second U-phase counter electromotive voltage Vcu2,” “second V-phase counter electromotive voltage Vcv2,” and “second W-phase counter electromotive voltage Vcw2,” respectively.
  • the maximum value of the magnetic flux of the second permanent magnet 23b that directly passes through the coil 24c of each phase is the coil 24c of each phase. Is equal to the maximum value of the magnetic flux of the first permanent magnet 23a that passes directly through the second core 25b, and the maximum value of the magnetic flux of the second permanent magnet 23b that passes through the coils 24c of each phase via the second core 25b is It is equal to the maximum value of the magnetic flux of the first permanent magnet 23a passing through the coil 24c of each phase via 25a. Further, as described above, the electrical angle between the first and second cores 25a and 25b is deviated from the electrical angle ⁇ / 2 (see FIG. 13).
  • the magnetic fluxes ⁇ ub, ⁇ vb, ⁇ wb of the second permanent magnet 23b that passes through the U-phase to W-phase coils 24c (that is, the magnetic flux that passes through the second core 25b, and the magnetic flux that passes directly without being passed) are represented by the following equations (16) to (18).
  • the second U-phase to W-phase counter electromotive voltages Vcu2, Vcv2, and Vcw2 are obtained by time-differentiating the magnetic fluxes ⁇ ub, ⁇ vb, and ⁇ wb of the second permanent magnet 23b that respectively pass through the U-phase to W-phase coils 24c. Are obtained respectively. Therefore, these back electromotive voltages Vcu2, Vcv2, and Vcw2 are respectively expressed by the following equations (22) to (24) obtained by differentiating the equations (19) to (21) with respect to time.
  • the stator 24 is configured such that magnetic poles having different polarities are generated at the ends of the iron core 24b on the first and second permanent magnets 23a, 23b side. Furthermore, the polarities of the first and second permanent magnets 23a and 23b arranged in the axial direction are the same. As is clear from these facts, the electrical angles of the first and second permanent magnets 23a and 23b arranged in the axial direction are shifted from each other by an electrical angle ⁇ . For this reason, the back electromotive voltages Vcu, Vcv, Vcw generated in the U-phase to W-phase coils 24c as the first and / or second rotors 23, 25 rotate are respectively the first U-phase to W-phase described above.
  • U-phase voltage Vu U-phase voltage Vu
  • V-phase voltage Vu V-phase voltage Vu
  • W-phase voltage Vw W-phase voltage
  • Ru, Rv, and Rw are the resistances of the U-phase to W-phase coils 24c
  • Lu, Lv, and Lw are the self-inductances of the U-phase to W-phase coils 24c, respectively. Both are predetermined values.
  • Muv is the mutual inductance between the U-phase coil 24c and the V-phase coil 24c
  • Mvw is the mutual inductance between the V-phase coil 24c and the W-phase coil 24c
  • Mwu is the same as that of the W-phase coil 24c.
  • s is a differential operator.
  • the voltage equation (2 ⁇ e2- ⁇ e1) and (2 ⁇ e2- ⁇ e1) of the electric motor 20 is expressed by the electric angle ⁇ e and electric angular velocity of the rotor of a general brushless DC motor.
  • the electric power supplied to the first to third stators 6 to 8 is controlled by the ECU 15 during the operation, so that the first to third rotating magnetic fields are generated. appear.
  • the magnetic poles of the virtual magnets 6x to 8x that is, the first to third armatures.
  • the power supplied to the first to third stators 6 to 8 is controlled so that the relationship shown in FIG.
  • the second permanent magnet 5b in the figure is a combination of two second permanent magnets 5b1 and 5b2
  • the second permanent magnet 5b is divided into two second permanent magnets 5b1 and 5b2
  • the result is as shown in FIG. That is, the configuration of FIG. 15 can be regarded as equivalent to the configuration of FIG.
  • the three permanent magnets 4b, 5b1, and 5b2 having the same polarity are arranged in the left-right direction in FIG. 15 and have the same phase.
  • the two cores adjacent to each other are shifted by an electrical angle of ⁇ / 3 to the lower side of the figure. That is, the first to third cores 11b to 13b are skewed.
  • the magnetic poles of the virtual magnets 6x to 8x that is, the first to third armature magnetic poles
  • the two adjacent magnetic poles are shifted by an electrical angle of 2 ⁇ / 3 to the lower side of the figure.
  • first electric motor structure when the first permanent magnet row, the first soft magnetic core row, and the first armature row are a set of electric motor structures (hereinafter referred to as “first electric motor structure”), the first electric motor structure An example of a corresponding equivalent circuit is shown in FIG. Further, a second permanent magnet row composed of the second permanent magnets 5b1 (that is, the second permanent magnets 5b), a second soft magnetic core row, and a second armature row are combined into a single motor structure (hereinafter referred to as “second motor structure”). ), An example of an equivalent circuit corresponding to the second electric motor structure is shown in FIG.
  • a magnetic circuit (not shown) is formed between the permanent magnet, the soft magnetic core, and the armature of each motor structure.
  • the electric motor structure corresponds to a magnetic machine structure.
  • ⁇ f is the maximum value of the magnetic flux of the first and second permanent magnets 4b and 5b passing through the three U-phase coils 6c to 8c via the three cores 11b to 13b.
  • ⁇ 1 is a first rotor electrical angle, and represents the rotation angle of the first rotor 3 with respect to the reference position as an electrical angle.
  • ⁇ 2 is the second rotor electrical angle, and represents the rotation angle of the second rotor 10 with respect to the reference position as an electrical angle.
  • ⁇ 1 and ⁇ 2 represent time differential values of the two electrical angles ⁇ 1 and ⁇ 2, respectively.
  • the magnetic flux ⁇ u appearing in the entire U phase of the electric motor 1 is the sum of the three ⁇ u1 to ⁇ u3, the following expression (38) is obtained as an expression for calculating the magnetic flux ⁇ u.
  • the magnetic fluxes of the first and second permanent magnets 4b and 5b that directly pass through the three U-phase coils 6c to 8c without passing through the three cores 11b to 13b are extremely small, and the influence thereof can be ignored.
  • the magnetic fluxes of the first and second permanent magnets 4b and 5b that pass directly through the V-phase coils 6c to 8c and the W-phase coils 6c to 8c, respectively, without passing through the three cores 11b to 13b are extremely high. The effect can be ignored.
  • the counter electromotive voltages of the U phase, the V phase, and the W phase respectively correspond to values d ⁇ u / dt, d ⁇ v / dt, d ⁇ w / dt obtained by time-differentiating the magnetic fluxes ⁇ u, ⁇ v, ⁇ w.
  • the U-phase, V-phase, and W-phase back electromotive force calculation formulas are derived as the following formulas (41) to (43) by time differentiation of the above formulas (38) to (40).
  • the formulas (44) to (46) for calculating the counter electromotive voltages d ⁇ u / dt, d ⁇ v / dt, and d ⁇ w / dt are calculated using the formulas (28) to (30) for the counter electromotive voltages Vcu, Vcv, and Vcw of the electric motor 20 described above. ) And the two are the same.
  • the electrical angle phase difference between the magnetic poles generated in the armature 6a and the magnetic poles of the permanent magnets 4b is compared to the motor 20 having only two motor structures.
  • the phase difference of the electrical angle between the magnetic pole generated in the armature 6a and the first core 11b of the second rotor 10 can be set more finely. Thereby, torque ripple and cogging torque can be further reduced.
  • 1st Embodiment is an example which comprised the electric motor 1 as a magnetic machine as a rotary electric motor
  • the electric motor of the present invention is configured as a linear motor
  • two permanent magnets, three armatures, and three soft magnetic cores are arranged in a plane as shown in FIG.
  • the power supplied to the three armatures is set so that the three permanent magnets, the three soft magnetic cores, and the magnetic poles of the rotating magnetic field generated in the three armatures have the positional relationship shown in FIG. Control is sufficient.
  • the electric motor 1 of the first embodiment includes the first and second permanent magnets 4b and 5b, the first to third armatures 6 to 8 and the first to third cores 11b to 13b as shown in FIG.
  • these configurations may be arranged in the radial direction in the same manner as the electric motor 20 in FIG. 3 described above.
  • the first and second permanent magnets 4b and 5b are attached to the outer peripheral surface of the fixed portion 23c of FIG. 3
  • the first to third armatures 6 to 8 are connected to the inner peripheral surface of the peripheral wall 26a of FIG.
  • the first to third cores 11b to 13b may be attached to the outer end of the disc-shaped flange 25e via a bar-shaped connecting portion.
  • 1st Embodiment is an example which comprised the 1st and 2nd magnet rotor parts 4 and 5 integrally as the 1st rotor 3, let two rotor parts 4 and 5 be a different thing, These You may comprise so that both may be interlocked
  • the 1st rotor 3 of the electric motor 1 of 1st Embodiment replaces with the row
  • armatures The power supplied to the armature rows may be controlled so that the magnetic poles generated in the rows are the same as the magnetic poles of the permanent magnets 4b and 5b.
  • the magnetic poles of the two permanent magnets 4b and 5b that is, the second magnetic pole
  • the positional relationship with the magnetic poles (that is, the first magnetic poles) generated in the armatures 6a to 8a is the positional relationship shown in FIG. 14 (or the second permanent magnet 5b is considered to be composed of two permanent magnets 5b1 and 5b2.
  • the power supplied to the first to third armatures 6a to 8a is controlled so that the positional relationship shown in FIG. 15 is obtained.
  • the first magnetic pole, the second magnetic pole, The positional relationship between the magnetic member and the soft magnetic material is not limited to this, and the phase difference of the electrical angle between the first magnetic pole and the second magnetic pole in the first to third motor structures during the operation of the motor is not limited.
  • the electrical angle is shifted by 2 ⁇ / 3 with respect to the armature arrangement direction.
  • the three electrical machines are arranged such that the phase difference of the electrical angle between the first magnetic pole and the soft magnetic body of the soft magnetic body member is shifted by an electrical angle of ⁇ / 3 with respect to the armature arrangement direction. Any power supply may be used as long as the power supplied to the child is controlled.
  • a motor 1A shown in FIG. 19 may be configured.
  • the first to third cores 11b to 13b of the second rotor 10 are arranged so as to be at the same position in the left-right direction in the figure, and the first to third electric motors are operated during the operation of the electric motor 1A.
  • the phase difference of the electrical angle between the magnetic poles generated in the three armatures 6a to 8a is the armature 6a to
  • the phase of the electrical angle between the magnetic poles of the virtual magnets 6x to 8x and the first to third cores 11b to 13b is in the state of being shifted by an electrical angle of 2 ⁇ / 3 with respect to the arrangement direction of 8a.
  • the power supplied to the first to third armatures 6a to 8a is controlled so that the electrical angle is shifted by ⁇ / 3 with respect to the arrangement direction of 6a to 8a.
  • the three permanent magnets 4b, 5b1, 5b2 and the magnetic poles of the three armatures may be interchanged in the left-right direction.
  • the three permanent magnets 4b, 5b1, and 5b2 may be skewed along the rotation direction of the electric motor 1 instead of the same position in the left-right direction in FIG.
  • 3 3 shown in FIG. by controlling the power supplied to the first to third armatures 6a to 8a so that the above-described relationship of deviation of the electrical angle is established, 3 3 shown in FIG.
  • the same operational effects as those of the electric motor 1 having three electric motor structures, that is, the three electric motor structures shown in FIG. 14 can be obtained.
  • the first embodiment is an example in which the first to third motor structures are arranged as shown in FIG. 15, but the first to third motor structures may be arranged differently from these.
  • the case 2 is divided into three case members, which are provided with first to third stators 6 to 8, respectively, and the first rotor 3 is divided into three first rotor members, which are divided into three permanent members. Magnets 4b, 5b1, and 5b2 are provided, respectively, and the second rotor 10 is divided into three second rotor members, and three soft magnetic cores 11b to 13b are provided on these, respectively.
  • the first to third motor structures in the order of the second motor structure ⁇ the third motor structure ⁇ the first motor structure, or the first motor structure ⁇ the third motor structure ⁇ the second motor structure. These can be freely arranged.
  • 1st Embodiment is an example which comprised one magnetic pole in the 1st rotor 3 with the magnetic pole of one permanent magnet, you may comprise one magnetic pole with the magnetic pole of several permanent magnets.
  • the magnetic poles of two permanent magnets are arranged in a V shape to form one magnetic pole, the directivity of the lines of magnetic force can be increased.
  • the first embodiment is an example in which the coils of the armatures 6a to 8a of the first to third stators 6 to 8 are concentrated winding. Other winding methods may be used.
  • the first embodiment is an example in which the electric motor of the present invention is configured to have three sets of electric motor structures, but the electric motor of the present invention is not limited to this, and is configured to include four or more sets of electric motor structures. May be.
  • a formula for calculating a back electromotive force in an electric motor (not shown) having an electric motor structure of m (m is an integer of 3 or more) sets will be described.
  • the phase difference of the electrical angle between the magnetic pole generated in the armature and the magnetic pole of the permanent magnet has an electrical angle of 2 ⁇ / m with respect to the arrangement direction of the armature.
  • the phase difference of the electrical angle between the magnetic pole generated in the armature and the soft magnetic core is shifted by an electrical angle of ⁇ / m with respect to the armature arrangement direction.
  • the electric power supplied to the armature is controlled so as to achieve the state.
  • m sets of permanent magnet arrays are provided on one first rotor, and m sets of soft magnetic core arrays are provided on one second rotor (none of which are shown). .
  • the electrical angles corresponding to the rotation angles of the first and second rotors with respect to the reference position are expressed as first and second rotor electrical angles ⁇ 1 and ⁇ 2 for convenience.
  • m sets of permanent magnet rows are provided on m first rotors, respectively, and m sets of soft magnetic core rows are provided on m second rotors.
  • the m first rotors may be mechanically coupled so as to be interlocked with each other, and the m second rotors may be mechanically coupled so as to be interlocked with each other.
  • 1st Embodiment is an example using ECU2 as a control means for controlling the electric motor 1, it may replace with this and may use another electric circuit.
  • FIG. 20 is an exploded perspective view in which a part of the electric motor 1B is broken
  • FIG. 21 is a schematic and plan view of the arrangement of the electric motor structure when the electric motor 1B is seen through from the outside in the radial direction toward the center. It is shown.
  • the downward electrical angle in the figure is represented as a positive value
  • the upward electrical angle is represented as a negative value.
  • the electric motor 1B is a rotary electric motor, and includes a first rotor 40, a second rotor 50, and a stator 60 in order from the inner side in the radial direction.
  • the first rotor 40, the second rotor 50, and the stator 60 are all cylindrical and are disposed concentrically with each other and housed in a case (not shown).
  • the first rotor 40 corresponds to the second magnetic pole member
  • the second rotor 50 corresponds to the soft magnetic member
  • the stator 60 corresponds to the first magnetic pole member.
  • the first rotor 40 includes a base 41 and 2f (f is a natural number) permanent magnets 42 fixed to the outer peripheral surface of the base 41.
  • the base 41 is a laminate of steel plates, and is supported by a bearing (not shown) so as to be rotatable about the rotation axis of the electric motor 1B.
  • the 2f permanent magnets 42 are arranged at equal intervals in the circumferential direction of the outer peripheral surface of the base 41, and are arranged in a skewed manner so that both end portions of each permanent magnet 42 are displaced in the rotational direction. (See FIG. 21). Further, the surface of each permanent magnet 42 is covered with a steel plate 43. In the present embodiment, the magnetic pole of the permanent magnet 42 corresponds to the second magnetic pole.
  • the second rotor 50 is configured such that the inner peripheral surface thereof has a predetermined gap with the outer peripheral surface of the first rotor 40, and is rotatable around the rotation axis of the electric motor 1B by a bearing (not shown). It is supported.
  • the same number (ie, 2f) of soft magnetic cores 51 as the permanent magnets 42 are integrally fixed by a holding member 52 of a non-magnetic material (stainless steel, synthetic resin, etc.).
  • the soft magnetic cores 51 (soft magnetic bodies) extend in a predetermined length in the axial direction, and are arranged in parallel with each other at equal intervals in the circumferential direction of the second rotor 50.
  • the stator 60 generates a rotating magnetic field in accordance with the supply of electric power, and has 3f armatures 61.
  • These armatures 61 are composed of 3f iron cores 62 projecting inward from a cylindrical base, coils 63 wound around these iron cores 62, and the like. A set of three-phase coils is formed.
  • the 3f iron cores 62 are arranged at equal intervals in the circumferential direction of the inner peripheral surface of the stator 60, and the end portions of each iron core 62 are shifted in the opposite direction to the end portions of the permanent magnet 42.
  • the skews are arranged so that the positional relationship is satisfied.
  • the armature 61 is connected to a variable power source (not shown), and when power is supplied from the variable power source, the same number of magnetic poles as the magnetic poles of the permanent magnet 42 (that is, 2f) are provided on the iron core 62. It is comprised so that it may generate
  • the magnetic pole generated at the tip of the iron core 62 is referred to as “armature magnetic pole”.
  • armature magnetic pole a rotating magnetic field is generated so as to rotate along the stator 60, and a magnetic circuit (not shown) is interposed between the armature magnetic pole, the soft magnetic core 51 and the permanent magnet 42. It is formed.
  • the armature magnetic pole corresponds to the first magnetic pole.
  • the electrical angle between both ends of the armature magnetic pole (that is, the electrical angle between both ends of the iron core 62) is ⁇ s, and the electrical angle between both ends of the permanent magnet 42 is ⁇ a.
  • the ECU controls the electric power supplied from the variable power source to the stator 60 so that the armature magnetic poles are generated in the state shown in FIG.
  • one of the two electrical angles ⁇ s and ⁇ a is larger than the electrical angle ⁇ b by an electrical angle ⁇ , and the other of the two electrical angles ⁇ s and ⁇ a is smaller than the electrical angle ⁇ b by an electrical angle ⁇ .
  • the first to third cores 11b to 13b in the three sets of electric motor structures are arranged on the same straight line extending in the left-right direction, and the magnetic poles of the three permanent magnets 4b, 5b1, and 5b2
  • the phase difference of the electrical angle between the first to third cores 11b to 13b is arranged so as to increase by an electrical angle of ⁇ / 3, whereby the permanent magnet 5b2 in the rightmost electric motor structure in FIG.
  • the phase difference of the electrical angle between the magnetic pole and the core 13b is 2 ⁇ / 3.
  • the phase difference of the electrical angle between the magnetic poles of the permanent magnet and the soft magnetic core is referred to as a maximum phase difference (hereinafter referred to as “maximum phase difference”).
  • maximum phase difference Is (m ⁇ 1) ⁇ / m.
  • a motor 1A ′ in FIG. Become.
  • this electric motor 1A ′ a line segment connecting the centers of the four permanent magnets, a line segment connecting the centers of the four soft magnetic cores, and a line segment connecting the centers of the four armature magnetic poles
  • the positional relationship of the three when the three line segments are aligned in the left-right direction is the same as the positional relationship of the permanent magnet 42, the soft magnetic core 51, and the armature magnetic pole in FIG. .
  • this electric motor 1B in the electric motor having the above-described m sets of electric motor structures, it corresponds to the motor set to m ⁇ ⁇ , so that torque ripple and cogging torque are compared with those of the electric motors 1 and 1A. Can be further reduced. Furthermore, since the occurrence of a magnetic short circuit between the motor structures in the axial direction can be avoided, the size in the axial direction of the motor 1B can be reduced.
  • an electric motor structure such as the electric motor 1C shown in FIG. 23 or the electric motor 1D shown in FIG. 24 may be used.
  • one of the two electrical angles ⁇ s and ⁇ a is larger than the electrical angle ⁇ b by the electrical angle ⁇ , and the other of the two electrical angles ⁇ s and ⁇ a is smaller than the electrical angle ⁇ b by the electrical angle ⁇ .
  • the power supplied to the stator may be controlled. 23 and 24, for convenience, the same reference numerals are used for the same configuration as that of the electric motor 1B.
  • the space factor of the coil can be increased as compared with the electric motor 1B.
  • the permanent magnet is more difficult to manufacture because the twist degree of the permanent magnet is larger than that of the electric motor 1B, and the manufacturing cost is increased accordingly.
  • the first rotor 40 is manufactured compared to the electric motor 1B.
  • the torsion degree of the iron core is larger than that of the electric motor 1B, so that the manufacturing is difficult, and the manufacturing cost is increased accordingly.
  • the electric motor structure shown in FIGS. 21, 23, and 24 is an example in which any one of a permanent magnet, an armature, and a soft magnetic core is disposed so as to extend in the axial direction.
  • the permanent magnet, the armature, and the soft magnetic core may all be skewed, the armature is disposed so as to extend in the axial direction, and the magnetic pole generated in the armature is inclined with respect to the rotation direction ( That is, it may be configured to occur in a skew state.
  • the electric motor 1B of 2nd Embodiment is the example which has arrange
  • the second embodiment is an example in which the electric motor 1B is configured as a rotary electric motor, but the electric motor as the magnetic machine of the present invention is not limited thereto, and may be configured as an electric motor such as a linear motor.
  • the electric motor of the present invention when configured as a linear motor, the permanent magnet, the armature, and the soft magnetic core are arranged in a plane as shown in FIGS.
  • the magnetic machine of this invention is comprised as a magnetic power transmission mechanism which transmits motive power via magnetism. May be.
  • the three armatures 6a to 8a in the electric motor 1 of the first embodiment are replaced with a row of permanent magnets, and the magnetic poles of these permanent magnets are replaced with three armatures 6a when a moving magnetic field is generated.
  • the magnetic power transmission mechanism may be configured by arranging the magnetic poles so as to be in a positional relationship of ⁇ 8a. That is, the magnetic power transmission mechanism may be configured by replacing the virtual magnets 6x to 8x in FIG. 14 or FIG. 15 with permanent magnets.
  • the magnetic power transmission mechanism When the magnetic power transmission mechanism is configured as described above, the permanent magnet is provided in the case, and the rotation of the case corresponds to the movement of the moving magnetic field generated in the three armatures 6a to 8a. Therefore, the magnetic power transmission mechanism can perform the same operation as that of the electric motor 1 as described above. That is, the same operation as that of the velocity diagram of FIG. 11 described above can be executed. In addition to this, since two permanent magnet rows and soft magnetic row are set as one set, and three sets of magnetic mechanical structures are provided, the magnetic power of Patent Document 3 having only two sets of magnetic mechanical structures is provided. Compared with the transmission mechanism, cogging torque and the like can be reduced.
  • a magnetic power transmission mechanism may be configured by replacing the armature with a permanent magnet. That is, the magnetic power transmission mechanism may be configured to include m sets of magnetic mechanical structures. Even when the magnetic power transmission mechanism is configured as described above, the same operation as the above-described magnetic power transmission mechanism can be performed, and the cogging torque and the like are reduced as compared with the magnetic power transmission mechanism of Patent Document 3. can do. In particular, the greater the number of sets of magnetic mechanical structures, the more the cogging torque can be reduced.
  • the row of armatures 61 in the electric motor 1B of the second embodiment is replaced with a row of permanent magnets, and the magnetic poles of these permanent magnets are replaced with those of the armature 60 when a moving magnetic field is generated.
  • the magnetic power transmission mechanism may be configured as a thrust transmission type instead of a torque transmission type.
  • the virtual magnets 6x to 8x in FIG. 14 (or FIG. 15) are replaced with permanent magnets, and the permanent magnets 4b and 5b (or permanent magnets 4b, 5b1 and 5b2) and the cores 11b to 13b.
  • the armature magnetic poles shown in FIGS. 21, 23, and 24 are replaced with magnetic poles of permanent magnets, and the positional relationship between the permanent magnets 42 and the soft magnetic core 51 is planar as shown in FIGS. May be arranged.
  • the present invention is effective in reducing torque and thrust ripple and cogging in a magnetic machine such as a magnetic power transmission mechanism and an electric motor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

L'invention porte sur une machine magnétique capable de réduire l'ondulation et le crantage d'un couple ou poussée. La machine magnétique (1) comprend trois stators (6 à 8) ayant chacun une rangée d'armatures, un rotor (3) ayant une rangée d'aimants permanents et un rotor (10) ayant une rangée magnétiquement faible. Les phases d'angles électriques entre les pôles magnétiques induits dans les armatures (6a à 8a) de la rangée d'armatures et les pôles magnétiques de la rangée d'aimants permanents sont individuellement réglées pour se décaler d'un angle électrique de 2 π/3 par rapport à une direction prédéterminée. Les phases d'angles électriques entre les pôles magnétiques induits par les armatures (6a à 8a) de la rangée d'armatures et les noyaux de matériaux magnétiquement faibles (11b à 13b) de la rangée magnétiquement faible sont individuellement réglées pour se décaler d'un angle électrique de π/3 par rapport à une direction prédéterminée.
PCT/JP2008/070096 2008-02-08 2008-11-05 Machine magnétique WO2009098807A1 (fr)

Priority Applications (3)

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US12/864,937 US8232701B2 (en) 2008-02-08 2008-11-05 Magnetic machine
EP08872084.2A EP2242166A4 (fr) 2008-02-08 2008-11-05 Machine magnétique
CN200880125057.7A CN101953056B (zh) 2008-02-08 2008-11-05 磁力机械

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JP2008029772 2008-02-08
JP2008-029772 2008-02-08
JP2008154211A JP4701269B2 (ja) 2008-02-08 2008-06-12 磁気機械
JP2008-154211 2008-06-12

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WO2009098807A1 true WO2009098807A1 (fr) 2009-08-13

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JP (1) JP4701269B2 (fr)
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WO (1) WO2009098807A1 (fr)

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JP5362513B2 (ja) * 2009-10-06 2013-12-11 本田技研工業株式会社 動力システム
JP5306958B2 (ja) * 2009-10-06 2013-10-02 本田技研工業株式会社 電動機システム
JP5621794B2 (ja) * 2012-01-30 2014-11-12 株式会社デンソー 磁気変調式複軸モータ
US9479014B2 (en) * 2012-03-28 2016-10-25 Acme Product Development, Ltd. System and method for a programmable electric converter
US9484794B2 (en) * 2012-04-20 2016-11-01 Louis J. Finkle Hybrid induction motor with self aligning permanent magnet inner rotor
CN104904103B (zh) * 2012-11-22 2017-12-26 斯坦陵布什大学 具有两个同轴的转子的机器
US9431884B2 (en) * 2013-03-26 2016-08-30 Caterpillar Inc. Dual rotor switched reluctance machine
CN114103000A (zh) * 2020-08-28 2022-03-01 中兴通讯股份有限公司 模具及其控制方法
CN112510946B (zh) * 2020-11-20 2021-09-24 哈尔滨工业大学 航空航天领域用高功率密度轴横向磁通外转子永磁电机

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US20100308674A1 (en) 2010-12-09
CN101953056B (zh) 2013-03-27
EP2242166A4 (fr) 2014-08-13
EP2242166A1 (fr) 2010-10-20
US8232701B2 (en) 2012-07-31
CN101953056A (zh) 2011-01-19
JP2009213342A (ja) 2009-09-17
JP4701269B2 (ja) 2011-06-15

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